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TPS2041, TPS2051

POWER-DISTRIBUTION SWITCHES

SLVS172A –AUGUST 1998 – REVISED APRIL 1999

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

135-mΩ -Maximum (5-V Input) High-Side

MOSFET Switch

500 mA Continuous Current

Short-Circuit and Thermal Protection With

Overcurrent Logic Output

Operating Range . . . 2.7 V to 5.5 V

Logic-Level Enable Input

2.5-ms Typical Rise Time

Undervoltage Lockout

10 µA Maximum Standby Supply Current

Bidirectional Switch

Available in 8-pin SOIC and PDIP Packages

Ambient Temperature Range, –40°C to 85°C

2-kV Human-Body-Model, 200-V

Machine-Model ESD Protection

UL Listed – File No. E169910

description

The TPS2041 and TPS2051 power distribution switches are intended for applications where heavy capacitive

loads and short circuits are likely to be encountered. The TPS2041 and the TPS2051 are 135-mΩ N-channel

MOSFET high-side power switches. Each switch is controlled by a logic enable compatible with 5-V and 3-V

logic. Gate drive is provided by an internal charge pump that controls the power-switch rise times and fall times

to minimize current surges during switching. The charge pump requires no external components and allows

operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the TPS2041 and TPS2051 limit

the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC

) logic

output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch,

causing the junction temperature to rise, a thermal protection circuit shuts off the switch in overcurrent to prevent

damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal

circuitry ensures the switch remains off until valid input voltage is present.

The TPS2041 and TPS2051 are designed to limit at 0.9-A load. These power distribution switches are available

in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP) and operate over

an ambient temperature range of –40°C to 85°C.

AVAILABLE OPTIONS

RECOMMENDED

MAXIMUM CONTINUOUS

TYPICAL SHORT-CIRCUIT

PACKAGED DEVICES

ENABLE

MAXIMUM

CONTINUOUS

LOAD CURRENT

(A)

CURRENT LIMIT AT 25°C

(A)

SOIC

(D)

†

PDIP

(P)

–40°C to 85°C Active low 0.5 0.9 TPS2041D TPS2041P

–40°C to 85°C Active high 0.5 0.9 TPS2051D TPS2051P

†

The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2041DR)

This document contains information on products in more than one phase

of development. The status of each device is indicated on the page(s)

specifying its electrical characteristics.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

GND

OUT

TPS2041

D OR P PACKAGE

(TOP VIEW)

GND

OUT

TPS2051

D OR P PACKAGE

(TOP VIEW)

Summary of content (25 pages)

PAGE 1
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 D D D D D D D D D D D D D 135-mΩ -Maximum (5-V Input) High-Side MOSFET Switch 500 mA Continuous Current Short-Circuit and Thermal Protection With Overcurrent Logic Output Operating Range . . . 2.7 V to 5.5 V Logic-Level Enable Input 2.
PAGE 2
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 TPS2041 functional block diagram Power Switch † CS IN OUT Charge Pump EN Driver Current Limit OC UVLO Thermal Sense GND †Current Sense Terminal Functions TERMINAL NO. NAME I/O D OR P DESCRIPTION TPS2041 TPS2051 EN 4 – I Enable input. Logic low turns on power switch. EN – 4 I Enable input. Logic high turns on power switch.
PAGE 3
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 detailed description power switch The power switch is an N-channel MOSFET with a maximum on-state resistance of 135 mΩ (VI(IN) = 5 V). Configured as a high-side switch, the power switch prevents current flow from OUT to IN and IN to OUT when disabled. The power switch supplies a minimum of 500 mA per switch.
PAGE 4
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Input voltage range, VI(IN) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V Output voltage range, VO(OUT) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VI(IN) + 0.3 V Input voltage range, VI(ENx) or VI(ENx) .
PAGE 5
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 electrical characteristics over recommended operating junction temperature range, VI(IN)= 5.5 V, IO = rated current, VI(EN) = 0 V, VI(EN) = Hi (unless otherwise noted) power switch TEST CONDITIONS† PARAMETER Static St ti drain-source d i on-state t t resistance 5-V o resistance, operation eration rDS(on) DS( ) Static St ti drain-source d i on-state t t resistance, o eration resistance 3.
PAGE 6
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 electrical characteristics over recommended operating junction temperature range, VI(IN)= 5.
PAGE 7
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 PARAMETER MEASUREMENT INFORMATION OUT RL tf tr CL VO(OUT) 90% 10% 90% 10% TEST CIRCUIT 50% VI(EN) 50% toff ton toff ton 90% VO(OUT) 50% 50% VI(EN) 90% VO(OUT) 10% 10% VOLTAGE WAVEFORMS Figure 1. Test Circuit and Voltage Waveforms VI(EN) (5 V/div) VI(EN) (5 V/div) VI(IN) = 5 V TA = 25°C CL = 0.1 µF VO(OUT) (2 V/div) 0 1 2 3 4 5 6 7 8 9 VI(IN) = 5 V TA = 25°C CL = 0.
PAGE 8
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 PARAMETER MEASUREMENT INFORMATION VI(EN) (5 V/div) VI(EN) (5 V/div) VI(IN) = 5 V TA = 25°C CL = 1 µF RL = 10 Ω VO(OUT) (2 V/div) 0 1 2 3 4 5 6 7 8 VI(IN) = 5 V TA = 25°C CL = 1 µF RL = 10 Ω VO(OUT) (2 V/div) 9 10 0 2 4 6 t – Time – ms 8 10 12 14 16 18 20 t – Time – ms Figure 4. Turnon Delay and Rise Time with 1-µF Load Figure 5.
PAGE 9
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 PARAMETER MEASUREMENT INFORMATION VI(IN) = 5 V TA = 25°C RL = 10 Ω VI(EN) (5 V/div) VO(OC) (5 V/div) 470 µF 220 µF 100 µF VI(IN) = 5 V Load Ramp,1A/100 ms TA = 25°C IO(OUT) (0.5 A/div) IO(OUT) (o.2 A/div) 0 2 4 6 8 10 12 14 16 0 18 20 20 40 60 80 100 120 140 160 180 200 t – Time – ms t – Time – ms Figure 8. Inrush Current with 100-µF, 220-µF and 470-µF Load Capacitance Figure 9.
PAGE 10
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 TYPICAL CHARACTERISTICS TURNON DELAY vs INPUT VOLTAGE TURNOFF DELAY vs INPUT VOLTAGE 6 17 CL = 1 µF RL = 10 Ω TA = 25°C 5.5 16 CL = 1 µF RL = 10 Ω TA = 25°C Turn-Off Delay – ms Turn-On Delay – ms 15 5 4.5 4 14 13 12 11 3.5 3 2.5 10 3 3.5 4 4.5 5 5.5 3 2.5 6 3 VI – Input Voltage – V 5 3.5 4 4.5 VI – Input Voltage – V Figure 12 3.3 f t – Fall Time – ms r t – Rise Time – ms 0.9 3.
PAGE 11
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 TYPICAL CHARACTERISTICS SUPPLY CURRENT, OUTPUT ENABLED vs JUNCTION TEMPERATURE SUPPLY CURRENT, OUTPUT DISABLED vs JUNCTION TEMPERATURE 1000 I I(IN) – Supply Current, Output Disabled – nA I I(IN) – Supply Current, Output Enabled – µ A 100 VI(IN) = 5.5 V VI(IN) = 5 V 90 VI(IN) = 4 V 80 VI(IN) = 2.7 V 70 VI(IN) = 3.
PAGE 12
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE 175 IO = 0.5 A VI(IN) = 2.7 V 150 VI(IN) = 3.3 V 125 100 VI(IN) = 4.5 V VI(IN) = 5 V 75 50 –50 –25 0 25 50 100 75 125 150 r DS(on) – Static Drain-Source On-State Resistance – mΩ r DS(on) – Static Drain-Source On-State Resistance – m Ω TYPICAL CHARACTERISTICS STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs INPUT VOLTAGE 175 IO = 0.
PAGE 13
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 TYPICAL CHARACTERISTICS THRESHOLD TRIP CURRENT vs INPUT VOLTAGE SHORT CIRCUIT OUTPUT CURRENT vs JUNCTION TEMPERATURE 1.2 0.95 I OS – Short-circuit Output Current – A Threshold Trip Current – A TA = 25°C Load Ramp = 1 A/10 ms 1.175 1.15 1.125 1.1 2.5 3 4.5 5 3.5 4 VI – Input Voltage – V 5.5 VI(IN) = 5 V 0.9 VI(IN) = 4 V VI(IN) = 2.7 V 0.85 0.
PAGE 14
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 TYPICAL CHARACTERISTICS OVERCURRENT RESPONSE TIME (OC) vs PEAK CURRENT 8 VI(IN) = 5 V TA = 25°C Response Time – µ s 6 4 2 0 0 2.5 5 7.5 10 12.5 Peak Current – A Figure 28 APPLICATION INFORMATION TPS2041 Power Supply 2.7 V to 5.5 V 2,3 IN 0.1 µF OUT 6,7,8 Load 0.1 µF 5 4 22 µF OC EN GND 1 Figure 29. Typical Application power-supply considerations A 0.01-µF to 0.
PAGE 15
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION overcurrent A sense FET is employed to check for overcurrent conditions. Unlike current-sense resistors, sense FETs do not increase the series resistance of the current path. When an overcurrent condition is detected, the device maintains a constant output current and reduces the output voltage accordingly.
PAGE 16
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION power dissipation and junction temperature The low on-resistance on the n-channel MOSFET allows small surface-mount packages, such as SOIC, to pass large currents. The thermal resistances of these packages are high compared to those of power packages; it is good design practice to check power dissipation and junction temperature.
PAGE 17
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION The USB specification defines the following five classes of devices, each differentiated by power-consumption requirements: D D D D D Hosts/self-powered hubs (SPH) Bus-powered hubs (BPH) Low-power, bus-powered functions High-power, bus-powered functions Self-powered functions Self-powered and bus-powered hubs distribute data and power to downstream functions.
PAGE 18
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION low-power bus-powered functions and high-power bus-powered functions Both low-power and high-power bus-powered functions obtain all power from upstream ports; low-power functions always draw less than 100 mA; high-power functions must draw less than 100 mA at powerup and can draw up to 500 mA after enumeration.
PAGE 19
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION TUSB2040 Hub Controller Upstream Port SN75240 BUSPWR A C B D GANGED D+ D– DP0 DP1 DM0 DM1 Tie to TPS2041 EN Input D+ A C B D GND OC 5V IN DM2 5 V Power Supply EN 5V DM3 TPS76333 4.7 µF GND 33 µF† A C B D 0.1 µF SN75240 D+ D– Ferrite Beads GND DP4 IN 3.3 V 4.
PAGE 20
TPS2041, TPS2051 POWER-DISTRIBUTION SWITCHES SLVS172A –AUGUST 1998 – REVISED APRIL 1999 APPLICATION INFORMATION generic hot-plug applications (see Figure 34) In many applications it may be necessary to remove modules or pc boards while the main unit is still operating. These are considered hot-plug applications. Such implementations require the control of current surges seen by the main power supply and the card being inserted.
PAGE 21
PACKAGE OPTION ADDENDUM www.ti.
PAGE 22
PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device.
PAGE 23
PACKAGE MATERIALS INFORMATION www.ti.com 29-Jul-2010 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS2041DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TPS2051DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
PAGE 24
PACKAGE MATERIALS INFORMATION www.ti.com 29-Jul-2010 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2041DR SOIC D 8 2500 340.5 338.1 20.6 TPS2051DR SOIC D 8 2500 340.5 338.1 20.
PAGE 25
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